First Known Use: 1563
Dictionary
symmetry
noun sym·me·try \ˈsi-mə-trē\
: the quality of something that has two sides or halves that are the same or very close in size, shape, and position : the quality of having symmetrical parts
plural sym·me·tries
Full Definition of SYMMETRY
1
: balanced proportions; also : beauty of form arising from balanced proportions
2
: the property of being symmetrical; especially : correspondence in size, shape, and relative position of parts on opposite sides of a dividing line or median plane or about a center or axis — compare bilateral symmetry, radial symmetry
3
: a rigid motion of a geometric figure that determines a one-to-one mapping onto itself
4
: the property of remaining invariant under certain changes (as of orientation in space, of the sign of the electric charge, of parity, or of the direction of time flow) —used of physical phenomena and of equations describing them
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Origin of SYMMETRY
Latin symmetria, from Greek, from symmetros symmetrical, from syn- + metron measure — more at measure
Related to SYMMETRY
- Synonyms
- balance, coherence, concinnity, consonance, consonancy, orchestration, proportion, harmony, symphony, unity
- Antonyms
- asymmetry, discordance, disproportion, disunity, imbalance, incoherence, violence
Other Mathematics and Statistics Terms
SYMMETRY Defined for Kids
symmetry
noun sym·me·try \ˈsi-mə-trē\
plural sym·me·tries
Definition of SYMMETRY for Kids
: close agreement in size, shape, and position of parts that are on opposite sides of a dividing line or center : an arrangement involving regular and balanced proportions <the symmetry of the human body>
Medical Dictionary
symmetry
noun sym·me·try \ˈsim-ə-trē\
plural sym·me·tries
Medical Definition of SYMMETRY
1
: correspondence in size, shape, and relative position of parts on opposite sides of a dividing line or median plane or about a center or axis—see bilateral symmetry, radial symmetry
2
: the property of remaining invariant under certain changes (as of orientation in space, of the sign of the electric charge, of parity, or of the direction of time flow)—used of physical phenomena and of equations describing them
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